Guitar teaching tool



FIG. 1 is a top view.

FIG. 2 is a bottom view.

FIG. 3 is a front view.

FIG. 4 is a back view.

FIG. 5 is a left side view.

FIG. 6 is a right side view; and,

FIG. 7 is an isometric view. 

The ornamental design for guitar teaching tool, as shown and described. 